[ceph.git] / ceph / src / boost / boost / config / compiler / visualc.hpp

//  (C) Copyright John Maddock 2001 - 2003.
//  (C) Copyright Darin Adler 2001 - 2002.
//  (C) Copyright Peter Dimov 2001.
//  (C) Copyright Aleksey Gurtovoy 2002.
//  (C) Copyright David Abrahams 2002 - 2003.
//  (C) Copyright Beman Dawes 2002 - 2003.
//  Use, modification and distribution are subject to the
//  Boost Software License, Version 1.0. (See accompanying file
//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

//  See http://www.boost.org for most recent version.
//
//  Microsoft Visual C++ compiler setup:
//
//  We need to be careful with the checks in this file, as contrary
//  to popular belief there are versions with _MSC_VER with the final
//  digit non-zero (mainly the MIPS cross compiler).
//
//  So we either test _MSC_VER >= XXXX or else _MSC_VER < XXXX.
//  No other comparisons (==, >, or <=) are safe.
//

#define BOOST_MSVC _MSC_VER

//
// Helper macro BOOST_MSVC_FULL_VER for use in Boost code:
//
#if _MSC_FULL_VER > 100000000
#  define BOOST_MSVC_FULL_VER _MSC_FULL_VER
#else
#  define BOOST_MSVC_FULL_VER (_MSC_FULL_VER * 10)
#endif

// Attempt to suppress VC6 warnings about the length of decorated names (obsolete):
#pragma warning( disable : 4503 ) // warning: decorated name length exceeded

#define BOOST_HAS_PRAGMA_ONCE

//
// versions check:
// we don't support Visual C++ prior to version 7.1:
#if _MSC_VER < 1310
#  error "Compiler not supported or configured - please reconfigure"
#endif

#if _MSC_FULL_VER < 180020827
#  define BOOST_NO_FENV_H
#endif

#if _MSC_VER < 1400
// although a conforming signature for swprint exists in VC7.1
// it appears not to actually work:
#  define BOOST_NO_SWPRINTF
// Our extern template tests also fail for this compiler:
#  define BOOST_NO_CXX11_EXTERN_TEMPLATE
// Variadic macros do not exist for VC7.1 and lower
#  define BOOST_NO_CXX11_VARIADIC_MACROS
#  define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
#endif

#if _MSC_VER < 1500  // 140X == VC++ 8.0
#  define BOOST_NO_MEMBER_TEMPLATE_FRIENDS
#endif

#if _MSC_VER < 1600  // 150X == VC++ 9.0
   // A bug in VC9:
#  define BOOST_NO_ADL_BARRIER
#endif


#ifndef _NATIVE_WCHAR_T_DEFINED
#  define BOOST_NO_INTRINSIC_WCHAR_T
#endif

//
// check for exception handling support:
#if !defined(_CPPUNWIND) && !defined(BOOST_NO_EXCEPTIONS)
#  define BOOST_NO_EXCEPTIONS
#endif

//
// __int64 support:
//
#define BOOST_HAS_MS_INT64
#if defined(_MSC_EXTENSIONS) || (_MSC_VER >= 1400)
#   define BOOST_HAS_LONG_LONG
#else
#   define BOOST_NO_LONG_LONG
#endif
#if (_MSC_VER >= 1400) && !defined(_DEBUG)
#   define BOOST_HAS_NRVO
#endif
#if _MSC_VER >= 1600  // 160X == VC++ 10.0
#  define BOOST_HAS_PRAGMA_DETECT_MISMATCH
#endif
//
// disable Win32 API's if compiler extensions are
// turned off:
//
#if !defined(_MSC_EXTENSIONS) && !defined(BOOST_DISABLE_WIN32)
#  define BOOST_DISABLE_WIN32
#endif
#if !defined(_CPPRTTI) && !defined(BOOST_NO_RTTI)
#  define BOOST_NO_RTTI
#endif

//
// TR1 features:
//
#if (_MSC_VER >= 1700) && defined(_HAS_CXX17) && (_HAS_CXX17 > 0)
// # define BOOST_HAS_TR1_HASH			// don't know if this is true yet.
// # define BOOST_HAS_TR1_TYPE_TRAITS	// don't know if this is true yet.
# define BOOST_HAS_TR1_UNORDERED_MAP
# define BOOST_HAS_TR1_UNORDERED_SET
#endif

//
// C++0x features
//
//   See above for BOOST_NO_LONG_LONG

// C++ features supported by VC++ 10 (aka 2010)
//
#if _MSC_VER < 1600
#  define BOOST_NO_CXX11_AUTO_DECLARATIONS
#  define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
#  define BOOST_NO_CXX11_LAMBDAS
#  define BOOST_NO_CXX11_RVALUE_REFERENCES
#  define BOOST_NO_CXX11_STATIC_ASSERT
#  define BOOST_NO_CXX11_NULLPTR
#  define BOOST_NO_CXX11_DECLTYPE
#endif // _MSC_VER < 1600

#if _MSC_VER >= 1600
#  define BOOST_HAS_STDINT_H
#endif

// C++11 features supported by VC++ 11 (aka 2012)
//
#if _MSC_VER < 1700
#  define BOOST_NO_CXX11_FINAL
#  define BOOST_NO_CXX11_RANGE_BASED_FOR
#  define BOOST_NO_CXX11_SCOPED_ENUMS
#endif // _MSC_VER < 1700

// C++11 features supported by VC++ 12 (aka 2013).
//
#if _MSC_FULL_VER < 180020827
#  define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
#  define BOOST_NO_CXX11_DELETED_FUNCTIONS
#  define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
#  define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
#  define BOOST_NO_CXX11_RAW_LITERALS
#  define BOOST_NO_CXX11_TEMPLATE_ALIASES
#  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
#  define BOOST_NO_CXX11_VARIADIC_TEMPLATES
#  define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
#  define BOOST_NO_CXX11_DECLTYPE_N3276
#endif

#if _MSC_FULL_VER >= 180020827
#define BOOST_HAS_EXPM1
#define BOOST_HAS_LOG1P
#endif

// C++11 features supported by VC++ 14 (aka 2015)
//
#if (_MSC_FULL_VER < 190023026)
#  define BOOST_NO_CXX11_NOEXCEPT
#  define BOOST_NO_CXX11_REF_QUALIFIERS
#  define BOOST_NO_CXX11_USER_DEFINED_LITERALS
#  define BOOST_NO_CXX11_ALIGNAS
#  define BOOST_NO_CXX11_INLINE_NAMESPACES
#  define BOOST_NO_CXX11_CHAR16_T
#  define BOOST_NO_CXX11_CHAR32_T
#  define BOOST_NO_CXX11_UNICODE_LITERALS
#  define BOOST_NO_CXX14_DECLTYPE_AUTO
#  define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
#  define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
#  define BOOST_NO_CXX14_BINARY_LITERALS
#  define BOOST_NO_CXX14_GENERIC_LAMBDAS
#  define BOOST_NO_CXX14_DIGIT_SEPARATORS
#  define BOOST_NO_CXX11_THREAD_LOCAL
#endif
// C++11 features supported by VC++ 14 update 3 (aka 2015)
//
#if (_MSC_FULL_VER < 190024210)
#  define BOOST_NO_CXX14_VARIABLE_TEMPLATES
#  define BOOST_NO_SFINAE_EXPR
#  define BOOST_NO_CXX11_CONSTEXPR
#endif

// C++14 features supported by VC++ 14.1 (Visual Studio 2017)
//
#if (_MSC_VER < 1910)
#  define BOOST_NO_CXX14_AGGREGATE_NSDMI
#endif

// C++17 features supported by VC++ 14.1 (Visual Studio 2017) Update 3
//
#if (_MSC_VER < 1911) || (_MSVC_LANG < 201703)
#  define BOOST_NO_CXX17_STRUCTURED_BINDINGS
#endif

// MSVC including version 14 has not yet completely
// implemented value-initialization, as is reported:
// "VC++ does not value-initialize members of derived classes without
// user-declared constructor", reported in 2009 by Sylvester Hesp:
// https://connect.microsoft.com/VisualStudio/feedback/details/484295
// "Presence of copy constructor breaks member class initialization",
// reported in 2009 by Alex Vakulenko:
// https://connect.microsoft.com/VisualStudio/feedback/details/499606
// "Value-initialization in new-expression", reported in 2005 by
// Pavel Kuznetsov (MetaCommunications Engineering):
// https://connect.microsoft.com/VisualStudio/feedback/details/100744
// Reported again by John Maddock in 2015 for VC14:
// https://connect.microsoft.com/VisualStudio/feedback/details/1582233/c-subobjects-still-not-value-initialized-correctly
// See also: http://www.boost.org/libs/utility/value_init.htm#compiler_issues
// (Niels Dekker, LKEB, May 2010)
#define BOOST_NO_COMPLETE_VALUE_INITIALIZATION
//
// C++ 11:
//
#define BOOST_NO_TWO_PHASE_NAME_LOOKUP
#define BOOST_NO_CXX11_SFINAE_EXPR
// C++ 14:
#  define BOOST_NO_CXX14_CONSTEXPR
// C++ 17:
#define BOOST_NO_CXX17_INLINE_VARIABLES
#define BOOST_NO_CXX17_FOLD_EXPRESSIONS

//
// Things that don't work in clr mode:
//
#ifdef _M_CEE
#ifndef BOOST_NO_CXX11_THREAD_LOCAL
#  define BOOST_NO_CXX11_THREAD_LOCAL
#endif
#ifndef BOOST_NO_SFINAE_EXPR
#  define BOOST_NO_SFINAE_EXPR
#endif
#ifndef BOOST_NO_CXX11_REF_QUALIFIERS
#  define BOOST_NO_CXX11_REF_QUALIFIERS
#endif
#endif
#ifdef _M_CEE_PURE
#ifndef BOOST_NO_CXX11_CONSTEXPR
#  define BOOST_NO_CXX11_CONSTEXPR
#endif
#endif

//
// prefix and suffix headers:
//
#ifndef BOOST_ABI_PREFIX
#  define BOOST_ABI_PREFIX "boost/config/abi/msvc_prefix.hpp"
#endif
#ifndef BOOST_ABI_SUFFIX
#  define BOOST_ABI_SUFFIX "boost/config/abi/msvc_suffix.hpp"
#endif

#ifndef BOOST_COMPILER
// TODO:
// these things are mostly bogus. 1200 means version 12.0 of the compiler. The
// artificial versions assigned to them only refer to the versions of some IDE
// these compilers have been shipped with, and even that is not all of it. Some
// were shipped with freely downloadable SDKs, others as crosscompilers in eVC.
// IOW, you can't use these 'versions' in any sensible way. Sorry.
# if defined(UNDER_CE)
#   if _MSC_VER < 1400
      // Note: I'm not aware of any CE compiler with version 13xx
#      if defined(BOOST_ASSERT_CONFIG)
#         error "Unknown EVC++ compiler version - please run the configure tests and report the results"
#      else
#         pragma message("Unknown EVC++ compiler version - please run the configure tests and report the results")
#      endif
#   elif _MSC_VER < 1500
#     define BOOST_COMPILER_VERSION evc8
#   elif _MSC_VER < 1600
#     define BOOST_COMPILER_VERSION evc9
#   elif _MSC_VER < 1700
#     define BOOST_COMPILER_VERSION evc10
#   elif _MSC_VER < 1800 
#     define BOOST_COMPILER_VERSION evc11 
#   elif _MSC_VER < 1900 
#     define BOOST_COMPILER_VERSION evc12
#   elif _MSC_VER < 2000  
#     define BOOST_COMPILER_VERSION evc14
#   else
#      if defined(BOOST_ASSERT_CONFIG)
#         error "Unknown EVC++ compiler version - please run the configure tests and report the results"
#      else
#         pragma message("Unknown EVC++ compiler version - please run the configure tests and report the results")
#      endif
#   endif
# else
#   if _MSC_VER < 1200
      // Note: Versions up to 7.0 aren't supported.
#     define BOOST_COMPILER_VERSION 5.0
#   elif _MSC_VER < 1300
#     define BOOST_COMPILER_VERSION 6.0
#   elif _MSC_VER < 1310
#     define BOOST_COMPILER_VERSION 7.0
#   elif _MSC_VER < 1400
#     define BOOST_COMPILER_VERSION 7.1
#   elif _MSC_VER < 1500
#     define BOOST_COMPILER_VERSION 8.0
#   elif _MSC_VER < 1600
#     define BOOST_COMPILER_VERSION 9.0
#   elif _MSC_VER < 1700
#     define BOOST_COMPILER_VERSION 10.0
#   elif _MSC_VER < 1800 
#     define BOOST_COMPILER_VERSION 11.0
#   elif _MSC_VER < 1900
#     define BOOST_COMPILER_VERSION 12.0
#   elif _MSC_VER < 1910
#     define BOOST_COMPILER_VERSION 14.0
#   elif _MSC_VER < 1920
#     define BOOST_COMPILER_VERSION 14.1
#   else
#     define BOOST_COMPILER_VERSION _MSC_VER
#   endif
# endif

#  define BOOST_COMPILER "Microsoft Visual C++ version " BOOST_STRINGIZE(BOOST_COMPILER_VERSION)
#endif

//
// last known and checked version is 19.11.25547 (VC++ 2017.4):
#if (_MSC_VER > 1911)
#  if defined(BOOST_ASSERT_CONFIG)
#     error "Boost.Config is older than your current compiler version."
#  elif !defined(BOOST_CONFIG_SUPPRESS_OUTDATED_MESSAGE)
#     pragma message("Info: Boost.Config is older than your compiler version - probably nothing bad will happen - but you may wish to look for an update Boost version.  Define BOOST_CONFIG_SUPPRESS_OUTDATED_MESSAGE to suppress this message.")
#  endif
#endif
Commit	Line	Data
7c673cae FG	1	// (C) Copyright John Maddock 2001 - 2003.
	2	// (C) Copyright Darin Adler 2001 - 2002.
	3	// (C) Copyright Peter Dimov 2001.
	4	// (C) Copyright Aleksey Gurtovoy 2002.
	5	// (C) Copyright David Abrahams 2002 - 2003.
	6	// (C) Copyright Beman Dawes 2002 - 2003.
	7	// Use, modification and distribution are subject to the
	8	// Boost Software License, Version 1.0. (See accompanying file
	9	// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
	10
	11	// See http://www.boost.org for most recent version.
	12	//
	13	// Microsoft Visual C++ compiler setup:
	14	//
	15	// We need to be careful with the checks in this file, as contrary
	16	// to popular belief there are versions with _MSC_VER with the final
	17	// digit non-zero (mainly the MIPS cross compiler).
	18	//
	19	// So we either test _MSC_VER >= XXXX or else _MSC_VER < XXXX.
	20	// No other comparisons (==, >, or <=) are safe.
	21	//
	22
	23	#define BOOST_MSVC _MSC_VER
	24
	25	//
	26	// Helper macro BOOST_MSVC_FULL_VER for use in Boost code:
	27	//
	28	#if _MSC_FULL_VER > 100000000
	29	# define BOOST_MSVC_FULL_VER _MSC_FULL_VER
	30	#else
	31	# define BOOST_MSVC_FULL_VER (_MSC_FULL_VER * 10)
	32	#endif
	33
	34	// Attempt to suppress VC6 warnings about the length of decorated names (obsolete):
	35	#pragma warning( disable : 4503 ) // warning: decorated name length exceeded
	36
	37	#define BOOST_HAS_PRAGMA_ONCE
	38
	39	//
	40	// versions check:
	41	// we don't support Visual C++ prior to version 7.1:
	42	#if _MSC_VER < 1310
	43	# error "Compiler not supported or configured - please reconfigure"
	44	#endif
	45
	46	#if _MSC_FULL_VER < 180020827
	47	# define BOOST_NO_FENV_H
	48	#endif
	49
	50	#if _MSC_VER < 1400
	51	// although a conforming signature for swprint exists in VC7.1
	52	// it appears not to actually work:
	53	# define BOOST_NO_SWPRINTF
	54	// Our extern template tests also fail for this compiler:
	55	# define BOOST_NO_CXX11_EXTERN_TEMPLATE
	56	// Variadic macros do not exist for VC7.1 and lower
	57	# define BOOST_NO_CXX11_VARIADIC_MACROS
	58	# define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
	59	#endif
	60
	61	#if _MSC_VER < 1500 // 140X == VC++ 8.0
	62	# define BOOST_NO_MEMBER_TEMPLATE_FRIENDS
	63	#endif
	64
65	#if _MSC_VER < 1600 // 150X == VC++ 9.0
66	// A bug in VC9:
67	# define BOOST_NO_ADL_BARRIER
68	#endif
69
70
71	#ifndef _NATIVE_WCHAR_T_DEFINED
72	# define BOOST_NO_INTRINSIC_WCHAR_T
73	#endif
74
75	//
76	// check for exception handling support:
77	#if !defined(_CPPUNWIND) && !defined(BOOST_NO_EXCEPTIONS)
78	# define BOOST_NO_EXCEPTIONS
79	#endif
80
81	//
82	// __int64 support:
83	//
84	#define BOOST_HAS_MS_INT64
85	#if defined(_MSC_EXTENSIONS) \|\| (_MSC_VER >= 1400)
86	# define BOOST_HAS_LONG_LONG
87	#else
88	# define BOOST_NO_LONG_LONG
89	#endif
90	#if (_MSC_VER >= 1400) && !defined(_DEBUG)
91	# define BOOST_HAS_NRVO
92	#endif
93	#if _MSC_VER >= 1600 // 160X == VC++ 10.0
94	# define BOOST_HAS_PRAGMA_DETECT_MISMATCH
95	#endif
96	//
97	// disable Win32 API's if compiler extensions are
98	// turned off:
99	//
100	#if !defined(_MSC_EXTENSIONS) && !defined(BOOST_DISABLE_WIN32)
101	# define BOOST_DISABLE_WIN32
102	#endif
103	#if !defined(_CPPRTTI) && !defined(BOOST_NO_RTTI)
104	# define BOOST_NO_RTTI
105	#endif
106
107	//
108	// TR1 features:
109	//
b32b8144	110	#if (_MSC_VER >= 1700) && defined(_HAS_CXX17) && (_HAS_CXX17 > 0)
7c673cae FG	111	// # define BOOST_HAS_TR1_HASH // don't know if this is true yet.
	112	// # define BOOST_HAS_TR1_TYPE_TRAITS // don't know if this is true yet.
	113	# define BOOST_HAS_TR1_UNORDERED_MAP
	114	# define BOOST_HAS_TR1_UNORDERED_SET
	115	#endif
	116
	117	//
	118	// C++0x features
	119	//
	120	// See above for BOOST_NO_LONG_LONG
	121
	122	// C++ features supported by VC++ 10 (aka 2010)
	123	//
	124	#if _MSC_VER < 1600
	125	# define BOOST_NO_CXX11_AUTO_DECLARATIONS
	126	# define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
	127	# define BOOST_NO_CXX11_LAMBDAS
	128	# define BOOST_NO_CXX11_RVALUE_REFERENCES
	129	# define BOOST_NO_CXX11_STATIC_ASSERT
	130	# define BOOST_NO_CXX11_NULLPTR
	131	# define BOOST_NO_CXX11_DECLTYPE
	132	#endif // _MSC_VER < 1600
	133
	134	#if _MSC_VER >= 1600
	135	# define BOOST_HAS_STDINT_H
	136	#endif
	137
	138	// C++11 features supported by VC++ 11 (aka 2012)
	139	//
	140	#if _MSC_VER < 1700
	141	# define BOOST_NO_CXX11_FINAL
	142	# define BOOST_NO_CXX11_RANGE_BASED_FOR
	143	# define BOOST_NO_CXX11_SCOPED_ENUMS
	144	#endif // _MSC_VER < 1700
	145
	146	// C++11 features supported by VC++ 12 (aka 2013).
	147	//
	148	#if _MSC_FULL_VER < 180020827
	149	# define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
	150	# define BOOST_NO_CXX11_DELETED_FUNCTIONS
	151	# define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
	152	# define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
	153	# define BOOST_NO_CXX11_RAW_LITERALS
	154	# define BOOST_NO_CXX11_TEMPLATE_ALIASES
	155	# define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
	156	# define BOOST_NO_CXX11_VARIADIC_TEMPLATES
	157	# define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
	158	# define BOOST_NO_CXX11_DECLTYPE_N3276
	159	#endif
	160
	161	#if _MSC_FULL_VER >= 180020827
	162	#define BOOST_HAS_EXPM1
	163	#define BOOST_HAS_LOG1P
	164	#endif
	165
	166	// C++11 features supported by VC++ 14 (aka 2015)
	167	//
	168	#if (_MSC_FULL_VER < 190023026)
	169	# define BOOST_NO_CXX11_NOEXCEPT
	170	# define BOOST_NO_CXX11_REF_QUALIFIERS
	171	# define BOOST_NO_CXX11_USER_DEFINED_LITERALS
	172	# define BOOST_NO_CXX11_ALIGNAS
	173	# define BOOST_NO_CXX11_INLINE_NAMESPACES
	174	# define BOOST_NO_CXX11_CHAR16_T
175	# define BOOST_NO_CXX11_CHAR32_T
176	# define BOOST_NO_CXX11_UNICODE_LITERALS
177	# define BOOST_NO_CXX14_DECLTYPE_AUTO
178	# define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
179	# define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
180	# define BOOST_NO_CXX14_BINARY_LITERALS
181	# define BOOST_NO_CXX14_GENERIC_LAMBDAS
182	# define BOOST_NO_CXX14_DIGIT_SEPARATORS
183	# define BOOST_NO_CXX11_THREAD_LOCAL
184	#endif
185	// C++11 features supported by VC++ 14 update 3 (aka 2015)
186	//
187	#if (_MSC_FULL_VER < 190024210)
188	# define BOOST_NO_CXX14_VARIABLE_TEMPLATES
189	# define BOOST_NO_SFINAE_EXPR
190	# define BOOST_NO_CXX11_CONSTEXPR
191	#endif
192
b32b8144 FG	193	// C++14 features supported by VC++ 14.1 (Visual Studio 2017)
	194	//
	195	#if (_MSC_VER < 1910)
	196	# define BOOST_NO_CXX14_AGGREGATE_NSDMI
	197	#endif
	198
	199	// C++17 features supported by VC++ 14.1 (Visual Studio 2017) Update 3
	200	//
	201	#if (_MSC_VER < 1911) \|\| (_MSVC_LANG < 201703)
	202	# define BOOST_NO_CXX17_STRUCTURED_BINDINGS
	203	#endif
	204
7c673cae FG	205	// MSVC including version 14 has not yet completely
	206	// implemented value-initialization, as is reported:
	207	// "VC++ does not value-initialize members of derived classes without
	208	// user-declared constructor", reported in 2009 by Sylvester Hesp:
	209	// https://connect.microsoft.com/VisualStudio/feedback/details/484295
	210	// "Presence of copy constructor breaks member class initialization",
	211	// reported in 2009 by Alex Vakulenko:
	212	// https://connect.microsoft.com/VisualStudio/feedback/details/499606
	213	// "Value-initialization in new-expression", reported in 2005 by
	214	// Pavel Kuznetsov (MetaCommunications Engineering):
	215	// https://connect.microsoft.com/VisualStudio/feedback/details/100744
	216	// Reported again by John Maddock in 2015 for VC14:
	217	// https://connect.microsoft.com/VisualStudio/feedback/details/1582233/c-subobjects-still-not-value-initialized-correctly
	218	// See also: http://www.boost.org/libs/utility/value_init.htm#compiler_issues
	219	// (Niels Dekker, LKEB, May 2010)
	220	#define BOOST_NO_COMPLETE_VALUE_INITIALIZATION
	221	//
	222	// C++ 11:
	223	//
	224	#define BOOST_NO_TWO_PHASE_NAME_LOOKUP
b32b8144	225	#define BOOST_NO_CXX11_SFINAE_EXPR
7c673cae	226	// C++ 14:
7c673cae	227	# define BOOST_NO_CXX14_CONSTEXPR
b32b8144 FG	228	// C++ 17:
	229	#define BOOST_NO_CXX17_INLINE_VARIABLES
	230	#define BOOST_NO_CXX17_FOLD_EXPRESSIONS
	231
	232	//
	233	// Things that don't work in clr mode:
	234	//
	235	#ifdef _M_CEE
	236	#ifndef BOOST_NO_CXX11_THREAD_LOCAL
	237	# define BOOST_NO_CXX11_THREAD_LOCAL
	238	#endif
	239	#ifndef BOOST_NO_SFINAE_EXPR
	240	# define BOOST_NO_SFINAE_EXPR
	241	#endif
	242	#ifndef BOOST_NO_CXX11_REF_QUALIFIERS
	243	# define BOOST_NO_CXX11_REF_QUALIFIERS
	244	#endif
	245	#endif
	246	#ifdef _M_CEE_PURE
	247	#ifndef BOOST_NO_CXX11_CONSTEXPR
	248	# define BOOST_NO_CXX11_CONSTEXPR
	249	#endif
7c673cae FG	250	#endif
	251
	252	//
	253	// prefix and suffix headers:
	254	//
	255	#ifndef BOOST_ABI_PREFIX
	256	# define BOOST_ABI_PREFIX "boost/config/abi/msvc_prefix.hpp"
	257	#endif
	258	#ifndef BOOST_ABI_SUFFIX
	259	# define BOOST_ABI_SUFFIX "boost/config/abi/msvc_suffix.hpp"
	260	#endif
	261
	262	#ifndef BOOST_COMPILER
	263	// TODO:
	264	// these things are mostly bogus. 1200 means version 12.0 of the compiler. The
	265	// artificial versions assigned to them only refer to the versions of some IDE
	266	// these compilers have been shipped with, and even that is not all of it. Some
	267	// were shipped with freely downloadable SDKs, others as crosscompilers in eVC.
	268	// IOW, you can't use these 'versions' in any sensible way. Sorry.
	269	# if defined(UNDER_CE)
	270	# if _MSC_VER < 1400
	271	// Note: I'm not aware of any CE compiler with version 13xx
	272	# if defined(BOOST_ASSERT_CONFIG)
	273	# error "Unknown EVC++ compiler version - please run the configure tests and report the results"
	274	# else
	275	# pragma message("Unknown EVC++ compiler version - please run the configure tests and report the results")
	276	# endif
	277	# elif _MSC_VER < 1500
	278	# define BOOST_COMPILER_VERSION evc8
	279	# elif _MSC_VER < 1600
	280	# define BOOST_COMPILER_VERSION evc9
	281	# elif _MSC_VER < 1700
	282	# define BOOST_COMPILER_VERSION evc10
	283	# elif _MSC_VER < 1800
	284	# define BOOST_COMPILER_VERSION evc11
	285	# elif _MSC_VER < 1900
	286	# define BOOST_COMPILER_VERSION evc12
	287	# elif _MSC_VER < 2000
	288	# define BOOST_COMPILER_VERSION evc14
	289	# else
	290	# if defined(BOOST_ASSERT_CONFIG)
	291	# error "Unknown EVC++ compiler version - please run the configure tests and report the results"
	292	# else
	293	# pragma message("Unknown EVC++ compiler version - please run the configure tests and report the results")
	294	# endif
	295	# endif
	296	# else
b32b8144	297	# if _MSC_VER < 1200
7c673cae FG	298	// Note: Versions up to 7.0 aren't supported.
	299	# define BOOST_COMPILER_VERSION 5.0
	300	# elif _MSC_VER < 1300
	301	# define BOOST_COMPILER_VERSION 6.0
	302	# elif _MSC_VER < 1310
	303	# define BOOST_COMPILER_VERSION 7.0
	304	# elif _MSC_VER < 1400
	305	# define BOOST_COMPILER_VERSION 7.1
	306	# elif _MSC_VER < 1500
	307	# define BOOST_COMPILER_VERSION 8.0
	308	# elif _MSC_VER < 1600
	309	# define BOOST_COMPILER_VERSION 9.0
	310	# elif _MSC_VER < 1700
	311	# define BOOST_COMPILER_VERSION 10.0
	312	# elif _MSC_VER < 1800
	313	# define BOOST_COMPILER_VERSION 11.0
	314	# elif _MSC_VER < 1900
	315	# define BOOST_COMPILER_VERSION 12.0
b32b8144	316	# elif _MSC_VER < 1910
7c673cae	317	# define BOOST_COMPILER_VERSION 14.0
b32b8144 FG	318	# elif _MSC_VER < 1920
b32b8144 FG	319	# define BOOST_COMPILER_VERSION 14.1
7c673cae FG	320	# else
	321	# define BOOST_COMPILER_VERSION _MSC_VER
	322	# endif
	323	# endif
	324
	325	# define BOOST_COMPILER "Microsoft Visual C++ version " BOOST_STRINGIZE(BOOST_COMPILER_VERSION)
	326	#endif
	327
	328	//
b32b8144 FG	329	// last known and checked version is 19.11.25547 (VC++ 2017.4):
b32b8144 FG	330	#if (_MSC_VER > 1911)
7c673cae	331	# if defined(BOOST_ASSERT_CONFIG)
b32b8144 FG	332	# error "Boost.Config is older than your current compiler version."
	333	# elif !defined(BOOST_CONFIG_SUPPRESS_OUTDATED_MESSAGE)
	334	# pragma message("Info: Boost.Config is older than your compiler version - probably nothing bad will happen - but you may wish to look for an update Boost version. Define BOOST_CONFIG_SUPPRESS_OUTDATED_MESSAGE to suppress this message.")
7c673cae FG	335	# endif
7c673cae FG	336	#endif